Iieinrich gohrig



(No Model.) 2 Sheets-Sheet "1f H. GOHRIG.

WATER TUBE STEAM BOILER. No. 600,069. I Patented Mar. 1,1898.

Inventor:

(No Model.) 2 Sheets-Sheet 2.. H. GOHRIG.

WATER TUBE STEAM BOILER. No. 600,069. Patented Mar. 1,1898.

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miiller boilers.

UNITED STATES PATENT OFFICE.

HEINRICH GCHRIG, OF DARMSTADT, GERMANY.

WATER-TUBE STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 600,069, dated March 1,1898. Application filed December 23, 1896. flerial No. 616,731. (Nomodel.)

To all whom it may concern:

Be it known that I, HEINRICH GiiHRIG, a subject of the Grand Duke ofHesse, and a resident of Darmstadt, in the Grand Duchy of Hesse, in theGerman Empire, have invented Improvements in or Connected withWater-Tube or Tubulous Steam-Boilers, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention consists in improvements in water-tube boilers in whichthe side walls consist of separate pipes or drums placed close togetherone above the other and connected to the front and rear water-chambers.Boilers of this description as heretofore made were constructed withthese pipes arranged between the water-chambers and connected directwith the end Walls of the same. Because the .pipes were arranged closelyone above the other it was necessary, in order to connect each pipe withthe end plates of the water-chambers, to narrow down alternately eitherone end or the other of the pipes. This construction is adopted in theStein- In another construction the ends of the pipes are bent so as toobtain sufiicient room in the end walls for connecting the pipes withthe said walls. This arrangement is adopted in the Diirr boilers.Neither of these arrangements, however, recommended itself in practice,because, in the first place, a cleaning of the pipes in consequence ofthe narrowing down of the ends was rendered impossible, and, in thesecond place, the removal of an inlet-pipe was frequently only effectedwith the greatest difficulty. Also the places of connection of theseside pipes with the water-chambers were in direct contact with theflame, and because the pipes with narrowed-down ends could in any casebe but imperfectly cleaned, and the burning through of such pipes tookplace within a short period. By my present invention all thesedisadvantages are obviated by the fact that the tubes forming the sidewalls of the boiler are not connected with the end plates of thewater-chambers, but with the narrow outer side walls of the chambers bymeans of short tubes, so that the replacing of either one or the other,as also the cleaning of the pipes, can be effected in the simplestpossible manner. The places of connection are beyond the reach of theflame.

A boiler furnished with these improvements is shown in the accompanyingdrawings, in which Figure 1 is a vertical section of a boilerfurnace.Fig. 2 is a plan View thereof, partly in section; and Fig. 3 is across-section on line C D of Fig. 2.

The side walls of the boiler are, as before mentioned, formed by thesystem of pipes cl d which can be of any desired cross-section, but aremost advantageously made either round or quadrangular. If round pipesare used, they can have their ends formed of square section, as shown inFig. 3. These pipes are connected with the sidewalls it of thewater-chambers K K by means of short transverse tubes 6, which arepreferably flanged into side walls k of the water-chambers and into thetubes d 61 These tubes are located beyond the reach of the flames, andby cutting out the tubes e the pipes can be easily replaced, and,moreover, can be easily cleansed in a simple manner, because they are ofthe same cross-section throughout.

The substance of the invention as applied to a water-tube boiler inwhich the side Walls are formed of hollow pipes or drums is theconnection of the pipes with the narrow side walls of the front and rearWater-chambers first locating the connections of the side pipes and thewater-chambers out of the reach of the flame, and thereby lessening theliability of explosion, and, in the second place, to enable an easycleaning of such side pipes.

Having thus described my invention, what I therefore claim as new, anddesire to secure by Letters Patent thereon, is-

1. In a boiler the combination of the front and rear water-chambers, andaseries of'pipes forming the side walls, with short tubes con-' nectin gsaid pipes to the said chambers, said by means of short tubes for thepurposes of tubes being located out of the reach of the pipes (1, (P, tothe sides of chambers K, K flames and permitting easy cleansing of theall substantially as and for the purpose de- IO pipes,I and theirremoval and replacement. scribed.

2. n a boiler the combination with the v 5 front and rear Water-chambersas K, K and HEINRICH GOHRIG' the side Walls formed of systems of pipesd, XVitnesses: (1 substantially as described; with the series WILLYSCHENTZ, of short tubes e connecting the extremities of FERDINAND SAHLL.

